How do I access SCSI using A/UX System Calls?
Rick Auricchio
rick at crowbar.apple.com
Thu Sep 6 04:01:11 AEST 1990
In article <108 at ivc> ktyra at ivc.UUCP (Kristopher L. Tyra) writes:
>As far as I can tell there are no changes to the A/UX 1.1 Generic Driver
>in A/UX 2.0 not including additions for tape driver support (anyone in Apple
>please correct me if I'm wrong). My question out there is:
Minor bug fixes, nothing major.
>
>1) How many people wish to play with the SCSI ports directly?
I wish there were none.
>
>2) Is it enough to make a better Generic Driver interface for writing
> device drivers or should a /dev/scsi be created ? The A/UX 1.1 Generic
> Driver Interface in my opinion is limited and certain functions
> reported in thier documentation do not work.
Having a /dev/scsi would better benefit third-party hardware vendors,
who could then provide a single user-level portable driver that used
a standard /dev/scsi interface. Right now, providing a kernel-based
driver for each different system is a pain.
Having /dev/scsi wouldn't solve the problem for Mac binaries, which
expect to issue a trap to just shoot SCSI commands out.
>
>5) How about removable media ? Apple's driver re-reads the partition
> information on every open - it works but, yuck !!! Is this acceptable ?
The A/UX generic disk driver doesn't handle removable media at all.
This is a major change which will eventually be fixed.
--
Rick Auricchio, Apple Computer Inc, 10300 Bubb Rd, MS 50-UX Cupertino CA 95014
rick at apple.COM Mooney N894AR (408) 974-4227
Work is for people who don't know how to fly.
My opinion is my own. My employer? They use a windsock and a fire extinguisher.
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